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Bedrock Geologic Map of Vermont Released

Federal, State, and university collaboration celebrated as Vermont Governor Shumlin unveils most detailed map of the state ever published

Vermont Map Reveal From left to right: Charlotte Mehrtens, University of Vermont (UVM); Laurence Becker, Vermont Geological Survey (VGS); Nicholas Ratcliffe, U.S. Geological Survey (USGS); Jonathan Kim, VGS; Marjorie Gale, VGS; Barry Doolan, UVM; Peter Thompson, VGS; Gregory Walsh, USGS.
Photo Credit: Peter Valley, USGS

A new bedrock geologic map of Vermont, the first such map to be published in over 50 years, was unveiled on April 11, 2012, at the Vermont State House in Montpelier. Hosted by Governor Peter Shumlin, in conjunction with the U.S. Geological Survey (USGS), the Vermont Agency of Natural Resources, and the University of Vermont, the event showcased the ongoing collaboration that continues to bring Federal, State, and university partners together.

The new map details the 1.4 billion-year geologic history of the State. Understanding the Green Mountains is the key because tectonic events have made this range the backbone of Vermont today. With a clearer picture of this history, land management agencies and resource managers will be better equipped in terms of infrastructure development, aquifer protection, and hazard preparedness. Ensuring that State leadership has the latest geologic information is vital "when addressing the economic and environmental concerns of citizens, lawmakers, government, business, and local communities," said Governor Shumlin at the April event.

Vermont Governor Peter Shumlin Vermont Governor Peter Shumlin (at podium) with (L–R) Laurence Becker (VGS), Charlotte Mehrtens (UVM), and Deborah Markowitz (Vermont Agency of Natural Resources).
Photo Credit: Peter Valley, USGS

Years in the making, The Bedrock Geologic Map of Vermont has been a cooperative effort among many individuals. Primary authors, who were part of the project at its inception, are Nicholas M. Ratcliffe and Gregory J. Walsh, USGS; Marjorie H. Gale and Peter J. Thompson, Vermont Geological Survey; and Rolfe S. Stanley, University of Vermont. Numerous others have contributed over the course of this project, including Norman L. Hatch, Jr., Douglas W. Rankin, John N. Aleinikoff, and Linda M. Masonic, USGS; Barry L. Doolan and Charlotte J. Mehrtens, University of Vermont; Jonathan Kim, Vermont Geological Survey; and J. Gregory McHone, Wesleyan University. More than 60 students contributed during the span of the project as well.

The Bedrock Geologic Map of Vermont, at a scale of 1:100,000, spans 246 7.5-minute quadrangles and stands 8 feet tall. Printed versions can be purchased online at the USGS store, and several versions are available for download from the USGS Publications Warehouse or Vermont Geological Survey.